Ecotoxicology:
Algae:
EC
50 (96 h) for
Scenedesmus 0.075
mg/l.Bees:Not toxic to bees;
LD
50 (contact) >50 µg
tech./bee; (oral) >10 µg
tech./bee.Birds:
LC
50 (5 d) for bobwhite quail 3010, Japanese quail 1418, ring-necked pheasants 2126, mallard ducks 1651 ppm. In eggshell quality and reproduction studies,
NOAEL for American kestrel 2, mallard ducks 2.5, bobwhiDaphnia:
LC
50 (48 h) 0.14
mg/l.Fish:
LC
50 (96 h) for channel catfish 0.30 mg/l, bluegill sunfish 0.51 mg/l, largemouth bass 0.45 mg/l, fathead minnow 0.183 mg/l, sheepshead minnow 0.37
mg/l.
LC
50 (24 h) for rainbow trout 0.12 mg/l. Worms:
50 (7 d) 43.1
, (14 d) 24.6
ppm.Other aquatic spp.:
LC
50 (96 h) for mysid shrimp (
Mysidopsis bahia) 0.06
mg/l;
EC
50 for oyster shell 0.15, fiddler crab 64, invertebrate early life stage (
Hyalella) 0.19 mg/l.
Environmental fate:
Animals:In rats, following oral administration, 4,4'-dichlorobenzophenone and 2,2'-dichloro-1,1'-bis(chlorophenyl)ethanol are the principal metabolites. The same metabolites have been detected in laying hens and dairy goats.Soil:Soil photodegradation
DT
50 (silt loam) 30 d. Aqueous photodegradation
DT
50 (
pH 5, sensitised conditions) 1-4 d; (unsensitised conditions) 15-93 d. Soil metabolism (aerobic) in silt loaPlant:The principal metabolite in plants is 4,4'-dichlorobenzophenone.
WATER SOLUBILITY: 0.8 mg/l at 25° C.